package com.yootk;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.*;
class Ticket{
    private int count = 3;
    private  Lock lock = new ReentrantLock();
    public void sale(){
        this.lock.lock();
        try {
            if (this.count > 0) {
                TimeUnit.SECONDS.sleep(1);
                System.out.println("【" + Thread.currentThread().getName() +
                        "】卖票，剩余票数:" + this.count--);
            } else {
                System.err.println("【" + Thread.currentThread().getName()
                        + "】票已卖完了，明天再来!");}
        } catch (Exception e) {
        }finally {
            this.lock.unlock();
        }
    }
}
public class YootkDemo14 {
    public static void main(String [] args)throws Exception{
        Ticket ticket = new Ticket();
        for (int x = 0; x < 5; x++){
            new Thread(()->{
                ticket.sale();
            },"售票员 -"+x).start();
        }
    }
}
